FZUS53 KGRB 151856
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
156 PM CDT Fri May 15 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ521-522-152200-
Green Bay south of line from Cedar River to Rock Island Passage
and north of a line from Oconto WI to Little Sturgeon Bay WI-
Green Bay south of line from Oconto WI to Little Sturgeon Bay WI-
156 PM CDT Fri May 15 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT CDT TONIGHT...

.THIS AFTERNOON...S wind 15 to 25 kts. Waves 2 to 4 ft. Sunny.
.TONIGHT...S wind 15 to 25 kts veering SW 10 to 15 kts in the
late evening and overnight. Waves 3 to 5 ft subsiding to 1 to
3 ft after midnight. A slight chance of showers and
thunderstorms.
.SATURDAY...W wind 10 to 15 kts. Waves 2 ft or less. Partly
cloudy in the morning then clearing.
.SATURDAY NIGHT...NE wind 10 to 15 kts. Waves 2 ft or less. Clear
in the evening then becoming partly cloudy.

$$

LMZ541-152200-
Rock Island Passage to Sturgeon Bay WI-
156 PM CDT Fri May 15 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...

.THIS AFTERNOON...S wind to 30 kts. Waves 6 to 10 ft. Mostly
sunny.
.TONIGHT...S wind to 30 kts decreasing to 10 to 15 kts after
midnight. Waves 6 to 10 ft subsiding to 5 to 8 ft after midnight.
A chance of showers and a slight chance of thunderstorms after
midnight.
.SATURDAY...SW wind 10 to 15 kts. Waves 4 to 7 ft. Partly sunny
in the morning then clearing.
.SATURDAY NIGHT...NE wind 10 to 15 kts. Waves 1 to 3 ft. Mostly
clear.

$$

LMZ542-543-152200-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
156 PM CDT Fri May 15 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...

.THIS AFTERNOON...S wind to 30 kts. Waves 5 to 8 ft. Mostly
sunny.
.TONIGHT...S wind 15 to 25 kts decreasing to 10 to 15 kts after
midnight. Waves 5 to 8 ft subsiding to 4 to 7 ft after midnight.
A chance of showers and a slight chance of thunderstorms after
midnight.
.SATURDAY...W wind 10 to 15 kts. Waves 3 to 5 ft subsiding to
2 to 4 ft in the afternoon. Partly cloudy in the morning then
clearing.
.SATURDAY NIGHT...W wind 10 to 15 kts veering NE in the late
evening and overnight. Waves 1 to 3 ft. Mostly clear.

$$

See Lake Michigan Open Lake Forecast for Sunday through Tuesday.

Wave height forecast is for ice free areas.